Diesel engine heater



FIG. 1 is a top, front isometric view of the diesel engine heater;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a rear elevation view thereof;

FIG. 6 is a view of one side thereof; and,

FIG. 7 is a view of the side opposite FIG. 6.

The pattern fragmentarily shown in FIG. 1, is understood to extend throughout the area represented. 

The ornamental design for a diesel engine heater, as shown and described. 